Mailgun

Mailgun is a cloud-based email service provider designed for developers and businesses to send, receive, and track transactional and marketing emails. It offers programmatic access through a RESTful API and SMTP relay, enabling integration with applications and workflow systems.

Its core features include sending and delivery tracking via API or SMTP, inbound email routing, and event-based webhooks. Deliverability tools help manage reputation, suppression lists, handle bounces and complaints, and monitor engagement metrics.

The platform includes email validation to verify addresses before sending, reducing invalid recipients and undeliverable mail. It also supports domain authentication through DKIM, SPF, and DMARC, easing compliance with mail providers and improving inbox placement. Analytics dashboards provide delivery statistics, opens, clicks, and trends.

Developers manage domains, routes, and inbound message handling through the API. Multiple SDKs and client libraries exist for common programming languages, and Mailgun integrates with popular development stacks and automation tools.

Pricing typically follows a pay-as-you-go model with optional monthly plans and free tier options for testing. Mailgun competes with other transactional email providers such as SendGrid, Amazon Simple Email Service, and Mailchimp Transactional.